Film-joining machine



Aug. 28; 1923.

E. L. VAN PELT FILM JOINING MACHINE Filed Au so. 1920 Patented Aug. 28,1923.

UNITED srrs team rice.

ELMER L. VANBELT, or DENVER, ooLonAno, ASSIGNOR To GEORGE. EEU'II-I, or"

DENVER, COLORADO, AND HENRY E. MCELWAIN, or HOLYOKE, IVIASSACHUSETTSnfFILM-JOINING MACHINE Application filed August 30, 1920. Serial No.406,994.

To all w/wmz'tmay concern:

Be it known that I, ELMER L. VAN PELT, a citizen of the United States,residing at the city and county of Denver, and State of Colorado, haveinvented certain new and useful Improvements inFilm-Joining Machines;and I do declare the followingto be a full, clear, and exact descriptionof the invention, such as will. enable others skilled in, the art, towhich it appertains to make and use the same, reference being had to theaccompanying drawings, and to the characters of reference markedthereon, which form a part of thisspecification.

The object of this invention is to provide a mechanical device forjoining film strips when assembling or mending the same, whereby thefilm, ends may be properly cemented and pressed together and the wasteextremities trimmed ofii' tocproduce a neat finish at, the joint. 1

Briefly the invention comprises a base carrying at 'oneend' anoverhanging abraiding member for removing the emulsion from one filmstrip, a cementing device at an intermediate point of said base, and atvthe opposite end a trimming press-for uniting the superimposed filmendsby' pressure and trimming oil the waste extremities.

In the drawings .Fig. l'is 'a side elevation of the device;

Fig. 2 is a cross section on line 2-2 of Fig. 1; r

Fig. 3 is a' plan as indicated by line 3 3 of Fig. 1; 1

Fig. 4 is a cross section on line 4 4 of Fig. 1;

i Fig. 5. is a view indicating'the relation and operation of the cuttingand pressing jaws; and.

Fig. 6 is a cross section thru the baseat the cement reservoir.

The base 10 of the machine is elongated and has at its rear end a foot12 provided with ears 1 1 having screw holes for attaching to a support.The sides of the base. 10 have guiding-grooves 15 extending.longlitudinally thereof for a purpose to be hereinafter described. Therear end of the base is provided with an overhanging head composed of apair .of spaced members 16 separated'from the base 10-by a narrow slot17-.

An upper pressing and cutting jawv Av is mounted between the members-16on a pivot 18 mounted i 'said members 16, said jaw comprisinga pressingblock 20 to one side of which a specially tempered cutting blade 22 isfixed as by spot welding, the cutting edge being produced by bevelingthe edge of the blade outward as indicated at 2ex'To hold said jaw A inelevated or inoperative position, a spring 25 has its-upper .end securedthereto, its lower end being anchored at 26 to thebase. For depressingthe jaw A a cam face 27 is provided on the lower end of a handle 28pivoted between the-members 16 of the headby a .pivot pin 30.

Immediatelybelow the jaw 'A, a jaw .13 is firmly mounted in the base 10,said jaw B being approximately equal .to the length of slot 17. The baseis cutout to receive the jaw B which comprises a pressing block 32 and atempered cutting-blade34 spotwelded to the block and provided with anoutwardly beveled cutting edge 35, like'thev jaw A. The jaw B isarranged in parallelism with the base and is secured in such position byrivet pins 36 conveniently set in the grooves 15. Thejaw A when forcedinto pressing position is parallel with j aW'B. The cuttin edges 24: and85 project beyond the respective blocks 20-,-and 32 a distance-veryslightly less than the thickness of the film F. In this manner cuttingof the opposed film is avoided and at the same time the brittleness ofthe film and outwa'rd bevel of the cutting edges combine to sever thewaste extremities f of the film when the film ends are being pressedbetween "blocks 20 and 32, completely. 7 v 1 i At the forward end of themachine a foot 40 is provided having at 4:2 apertured ears for securingto a support, this foot extending under the end-of the base 10 and beingsecured thereto by screwslt. ,A standard 45 rises from the; footand-"carriesa "stationary, rearwardly extending arm 46 which has itsrearend bifurcated as 'indiCated at 48 to receive an abraiding disc 50 forre Inovalof emulsion from, thelower film end.

A stepped journaling pin 52 extending thru.

the rear ends ofarm 4L6 secures said disc in place,the pin 52beingretainedby. a

cotter key 5 1- in its "smaller end, ;The opposite end of the52'carriesia pinion 55 for engagement by a rack. tobedescribed:

" A U shape carriage"56*.extends.upr-bothv extending tongues 58positioned in said.

guide grooves 15. A standard GO'which rises from the upper edge of oneside of the carthe base 10 and are provided with oppositely disposedpairs of film positioning studs 65 adapted to enter the sprocket holesat the ed 'es of the film. i

ecured to the under side of one rear end of the stationary arm 1-6 is alight spring which extends rearward and downward into alinement with theabraiding disc 50 and thepressing faces of blocks and 32, the

body ofthe spring being indicated at'ZO. Atan intermediate point in thebase 10 a cement reservoir 74 is provided this being filled i-f'desiredwith absorbent material 75. The top of the reservoir is closed by aslide plate 76 having an elongated slot 78 ea tending longitudinally ofthe base 10 and adapted to receive a cement wiper 80 on the under sideof the horizontally arranged free add 82 of the leaf spring 70. Thewiper 80 is of approximately the same widthas the disc and the pressingportions of the blocks 20 and 32, and it is beveled upward as it extendsforward for easy passage of the film. v

In using the device, the lower filmend is positioned on the studs 65emulsion sideup, and the carriage is moved rearward whereby the rack 64on the carriage rotates pinion and disc 50 and the emulsion is removed.As

rearward movement of the-carriage is con. -tinued, rack 64 leaves pinion55 and the fil m is guided under the inclined portion of spring 7 0thereby lifting the same and pass ing freely along the under side ofbeveled wiper 80 whereby the emulsion-freed area of the film iscemented. Preferably the carriage is stopped and the upper film strip Fpositioned on studs 65 above the portion 82 of the spring before thefilm reaches slot 17. Carriage 56 is then moved farther back to bringthe film between jaws A and B, the arm 62 passing alongside member 16,

Handle 28 is then depressed whereby the tips f of the film are severed,and the film ends to be'joined are firmly pressed together between theopposed parts of blocks 20 and 32. Said film ends are maintained in thepress a few moments until the cement has acted to complete the joint.

I claim: i j

1. A film joining machine comprising cutting and pressing means, acementing device, and a carriage for carrying film from the cementingdevice to said cutting and pressing means.

2. A film oining machine comprising cutting and pressing members, acementing device alined with the cutting and, pressing members, and areciprocable carriage for carrying film from the cementing device tosaid cutting and pressing means. i

3. A film joining machine comprising a pair of relatively movable blockshaving opposed faces for pressing film between them, means for applyingcement to a film face,

said blocks and said means being in longitudinal alinement, and areciprocating carnage for carrying film past said means'to said blocks.

posed faces for pressing films between them, 7

means for applying cement to a film face, and means in advance of thecementing means for removing the emulsion from said film face saidblocks and said two means being horizontally arranged in longitudinalalinement.

6. A film joining machine comprising a pair of relatively movable blockshaving opposed faces for pressing films between them, each block havinga cutting edge, means for removing the emulsion from a film face, meansfor applying cement to said film face said b'locks and said two meansbeing in longitudinal'alinement, anda recip rocating carriage forcarrying film past said two means to said blocks.

7. A film joining machine comprising a" pair of relatively movableblocks having opposed pressing faces for receiving films between them, abase by which said blocks are carried, an abraiding member also carriedby said base for removing emulsion from a film face, and means also onsaid base for applying cement to said film face after re moval ofemulsion.

8. A film joining machine comprising a pair of relatively movable blockshaving opposed film pressing faces, and a cutting edge projecting fromeach face, the cutting edges being offset from each other.

9. A film joining machine comprising a pair of relatively movable blockshaving 0pposed film pressing faces, and a cutting edge projecting fromeach face toward the other a distance approximating the thickness of a:a

film whereby an end may-be out without cutting an adjacent film,saidcutting edges being offset from each other a distance equal to the widthof the joint to'be produced,

10. A film joiningmachi-ne comprising'a pair of relatively movableblockshaving op posed film pressing faces, each face having a cutting edgeprojecting toward the other face a distance approximating the thicknessof a film, said cutting edges being spaced from each other laterally adistance equal to the Width of the joint to be produced, and means toapply cement to one of the film faces.

11. A film joining machine comprising a pair of relatively movableblocks having opposed film pressing faces and cutting edges, a base onwhich said blocks are carried at one end, a rotary emulsion-removingdevice at'the other'end of the base, a cementing device between theemulsion remover and the blocks, and a filmcarriage movable alongthebase to carry film past the emulsion remover and the cementing deviceto the blocks. I

12. A film joining machine comprising a base, a pair of relativelymovable cutting and pressing blocks on one end of said base, a rotaryemulsion-remover mounted on a fixed support at the other end of thebase, cementing means between the remover and the blocks, and a carriageslidable along said base having means to position the film to be treatedand having a rack operatively connected with the remover to rotate thesame as the carriage is moved, said carriage being adapted to carry filmpast the remover to remove emulsion, past the cementing device to applycement to the film-face having the emulsion removed, and thence to thecutting and pressing blocks.

13. A film joining machine comprising a horizontally disposed base,cutting and pressing blocks mounted on said base, a cementing device onsaid base, and a carriage reciprocable on said base to carry film fromsaid cementing device to said blocks. a

14. A film joining machine comprising a horizontally disposed base,cutting and pressing blocks mounted on said base, a cementing device onsaid base and in alinement with said blocks, and a reciprocable carriageto carry film from said cementing device to said blocks.

15. A film joining machine comprising a horizontally disposed base,cutting and pressing blocks mounted on said base, a,

cementing device on the base, an abraider on said base, said blocks,cementing device and abraider being in longitudinal alinement, and acarriage reciprocable on the base to carry film from the abraider pastthe cementing device to said blocks.

16. A film joining machine comprising a base, opposed cutting blocks onthe base, a cementing device on the base, and a reciprocable carriage tocarry film past the cementing device to the cutting blocks. 7

17. A film joining machine comprising a base, opposed cutting members onthe base, a cementing device on the base in alinement with the cuttingmembers, and a carriage on the base to carry film from the cementingdevice to the cutting members.

18. A film joining machine comprising a base, cutting andpressing blocksthereon,

a cementing device on the base, an abraider on the base, said blocks,cementing device and abraider beingiin longitudinal alinement, and acarriage reciprocable on the base to carry film from the abraider pastthe cementing device to said blocks- 19. A film joining machinecomprising a base, opposed cutting blocks on the base, an abraider, anda carriage on the base to carry film from the abraider to the cuttingblocks. Y

20. A film joining machine comprising a base, opposed cutting andpressing blocks on the base, an abraider, and a carriage to carry filmfrom the abraider to the blocks.

21. A film joining machine comprising a base, opposed cutting blockson'the base, an'abraider alined withthe blocks, and a carriage to carryfilm from the abraider to the blocks. v

22. A film joining machine comprising a base, cutting blocks on saidbase having opposed pressing faces, an abraider alined with the blocks,means to apply cement, and a carriage to carry film from the abraider tothe blocks.

23. A film joining machine comprising a base, opposed cutting blocks onsaid base fa cementing device and an abraider on said base, and acarriage toc-arry film from the abraider past the cementing device tothe blocks.

24. A film joining machine comprising a base, opposed cutting blocks onsaid base, a cementing device and an abraider alsovon said base, saidblocks, cementing device and abraider being in longitudinal alinement,and a carriage to carry film from the abraider past the cementing deviceto the blocks.

25. A film joining machine comprising a base, opposed cutting blocks onsaid base having opposed pressing faces, a cementing device, anabra1der,sa1d blocks, cementing device and abraider being, inlongitudinal alinement, and a carriage to carry film from the abraiderpast the cementing device to positionbetween said'blocks where the filmis trimmed and opposing ends pressed together between the blocks to formthe joint. V

In testimony whereof I aflix -my si nature.

' ELMER L. VAN ELT.

